Patients should take this medication exactly as prescribed by medical professionals or doctors. You should not use this medication for a more extended period than prescribed or in a larger dosage than prescription.
You may take this medication by mouth with or without food. You are taking the drug with food decrease the risk of adverse effects.
Points to be noted while Using Ambien Precautions.
Patients are advised to take the drug as proper as prescribed by the doctor. Do not take too lesser or more significant dosage than required.
You should read all the instructions and information, written in your medication guide or prescription label before using the drug.
Ambien contains high potential drug Zolpidem that may be habit-forming. Misuse of this drug can cause addiction, overdose even death
Do not take this medication if you do not have enough time (7-8) hours to sleep.
You should not stop taking the drug at once. It may cause severe Ambien withdrawal symptoms.
Do not crush, chew, or break a tablet.

Ambien Half-life
The half-life of a drug substance is a standard measure of how long it takes a dose to reduce in the body by half-life. The half-life of this medication is about 2.5 (range 1.4 hours to 4.5 hours) hours on average. It is only an estimated time that could be changed according to the individual's physical, mental, and medical conditions.

How long does It (Ambien) stay in your system?
Based on the half-life estimate, Ambien could take approximately 10 to 14 hours to eliminate from your system entirely. Ambien life may be variable in different types of users and their physical, mental, and medical conditions.

Ambien testing
Ambien may be detectable in some kinds of body parts even after the system's elimination timeout.
Urine testing: up to 72 hours after using the drug
Hair testing: about 3 to 5 weeks after using the medicine (hairs must at least 3 centimeters in length)
Saliva testing: up to 8 hours after use
Blood testing: within a few hours of use